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2 years ago

The sum of 45% of a number and 55% of the same number is 200. what is the number?

Mathematics

1 answer:

Ymorist [56]2 years ago

8 0

.45x+.55x=200
Combine like terms
1x=200
So x is 100

Or you can do 45%+55%=100%
And 100% of 200 is 200

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A rectangle has an area of 18 square feet. A similar rectangle 1

avanturin [10]

Answer:

$Ratio = 9 :80$

Step-by-step explanation:

Given

$A_1 = 18ft^2$ --- Area of smaller rectangle

$A_2 = 160ft^2$ --- Area of bigger rectangle

Required

Determine the area of the areas.

The ratio is calculated by the dividing the areas of rectangles.

$Ratio = \frac{A_1}{A_2}$

Substitute values for A2 and A1

$Ratio = \frac{18ft^2}{160ft^2}$

$Ratio = \frac{18}{160}$

Simplify the fraction

$Ratio = \frac{9}{80}$

Represent as ratio

$Ratio = 9 :80$

<em>Hence, the ratio of the rectangles is 1 to 9</em>

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2 years ago

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xxTIMURxx [149]

Answer:

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Step-by-step explanation:

i^15

Divide the exponent by 4

15/4 = 3 r 3

Take the remainder and use as the exponent

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i^3 = i^2 *i

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2 years ago

Your uncle is currently four times as old as you are. In five years, your uncle will be three times as old as you. What is your

sertanlavr [38]

Answer:

your uncle will always be 4 times as old as you if he is currently 4 times as old as you

Step-by-step explanation:

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2 years ago

Let f(x) = 1/x. Find a number b so that the average rate of change of f on the interval

Bezzdna [24]

Answer:

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Step-by-step explanation:

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3 years ago

Please help me with this MATH question.

andrey2020 [161]

Answer:

y=4

Step-by-step explanation:

84=30y-9y, first you collect like terms.

84=21y, swap the sides

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2 years ago